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A program to modify GIF image colormaps. Any local colormap in a GIF file can
be modified at a time, or the global screen one.
gifclrmap [-q] [-s] [-t trans] [-l map] [-g Gamma] [-i image] [-h] gif-file
If no gif-file is given, GifClip will try to read a GIF file from stdin.
- Quiet mode. Defaults off on MSDOS, on under UNIX. Controls printout
of running scan lines. Use -q- to invert.
- Select the global screen color map.
- [-l map]
- Load color map from this file instead of selected color map.
- [-t trans]
- Change color index values. The change is made to both
the selected color table and the raster bits of the selected image. A
translation file is a list of pairs of `before' and `after' index values.
At present, the `before' index values must be in ascending order starting
- [-g Gamma]
- Apply gamma correction to selected color map.
- [-i image]
- Select the color map of the numbered image.
- Print one command line help, similar to Usage above.
The default operation is to dump out the selected color map in text
The file to load/dump is simply one color map entry per line. Each such
entry line has four integers: "ColorIndex Red Green Blue", where color
index is in ascending order starting from 1.
Eric S. Raymond <email@example.com>